Both are very normal. Fired up is associated with stress, excitement, breeding, being awake. Fired down is usually while they are asleep or very calm.
Sometimes my geckos seem to fire up for no reason.
So either is ok. It's natural for them to do both.
Since your gecko is very new, I would limit handling for about two weeks and let it settle in and eat. A move to a new environment is very stressful for a crestie and he/she may not eat for you for a bit. This is normal and it won't starve. Just continue to offer fresh CGD every other night and limit handling to only absolutely necessary times.
If you have any questions, feel free to ask. You can even pm if you need to.
Good luck with your new little one. They are a blast.